Merge InstantPage into InstantTab.

chrome/browser/ui/search/instant_page.cc

-// Copyright 2013 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "chrome/browser/ui/search/instant_page.h"
-
-#include "chrome/browser/ui/search/search_model.h"
-#include "chrome/browser/ui/search/search_tab_helper.h"
-#include "chrome/common/url_constants.h"
-#include "content/public/browser/render_frame_host.h"
-#include "content/public/browser/web_contents.h"
-
-InstantPage::Delegate::~Delegate() {
-}
-
-InstantPage::~InstantPage() {
-  if (web_contents()) {
-    SearchTabHelper::FromWebContents(web_contents())->model()->RemoveObserver(
-        this);
-  }
-}
-
-bool InstantPage::supports_instant() const {
-  return web_contents() &&
-      SearchTabHelper::FromWebContents(web_contents())->SupportsInstant();
-}
-
-bool InstantPage::IsLocal() const {
-  return web_contents() &&
-      web_contents()->GetURL() == GURL(chrome::kChromeSearchLocalNtpUrl);
-}
-
-InstantPage::InstantPage(Delegate* delegate)
-    : delegate_(delegate) {
-}
-
-void InstantPage::SetContents(content::WebContents* new_web_contents) {
-  ClearContents();
-
-  if (!new_web_contents)
-    return;
-
-  Observe(new_web_contents);
-  SearchModel* model =
-      SearchTabHelper::FromWebContents(web_contents())->model();
-  model->AddObserver(this);
-
-  // Already know whether the page supports instant.
-  if (model->instant_support() != INSTANT_SUPPORT_UNKNOWN)
-    InstantSupportDetermined(model->instant_support() == INSTANT_SUPPORT_YES);
-}
-
-bool InstantPage::ShouldProcessAboutToNavigateMainFrame() {
-  return false;
-}
-
-void InstantPage::DidCommitProvisionalLoadForFrame(
-    content::RenderFrameHost* render_frame_host,
-    const GURL& url,
-    ui::PageTransition /* transition_type */) {
-  if (!render_frame_host->GetParent() &&
-      ShouldProcessAboutToNavigateMainFrame()) {
-    delegate_->InstantPageAboutToNavigateMainFrame(web_contents(), url);
-  }
-}
-
-void InstantPage::ModelChanged(const SearchModel::State& old_state,
-                               const SearchModel::State& new_state) {
-  if (old_state.instant_support != new_state.instant_support)
-    InstantSupportDetermined(new_state.instant_support == INSTANT_SUPPORT_YES);
-}
-
-void InstantPage::InstantSupportDetermined(bool supports_instant) {
-  delegate_->InstantSupportDetermined(web_contents(), supports_instant);
-
-  // If the page doesn't support Instant, stop listening to it.
-  if (!supports_instant)
-    ClearContents();
-}
-
-void InstantPage::ClearContents() {
-  if (web_contents()) {
-    SearchTabHelper::FromWebContents(web_contents())->model()->RemoveObserver(
-        this);
-  }
-
-  Observe(NULL);
-}